function openModal(url, width, height) {
	var a = new Array;
	a[0] = 1;
	a[1] = 4;
	var r = window.showModalDialog(url, a, "dialogwidth:" + width
			+ "; dialogheight: " + height + "; resizable: no");
	alert('Retorno da aplicacao: \n\n\t'+r.toSource());
}